Brake.



PATENTED APR. 16,1907

VAN BUREN LAMB.

, BRAKE. TAPPLIOATION FILED MAY 26. 1906.

2 SHEETSSHEET 1.

Fig; 3-

INVENTOR A BY E 9 A k g ATTORNEYS WITNESSES:

(PATENTED APR. 16, 1907.

No. 850,486. I

VAN BUREN PPLIOATION I LAMB.

ED MAY 26, 1906.

I By /IN-VEIVTOR Q Fi 'lUltlliTEll 3TATTFE Pr'tf'ilhlhiili VAN BUREN LAMB, OF NEW HAVEN,

YORK.

N. A CORPORATION 6F NEW No. ceases.

Specification of Letters Ratent.

Patented April 16, 1907'.

Application filed Hey 26, 1906. Serial No. 818,808.

To (all whom it incl/7 (Hi l/ 097721.

Be it known that I, VAN BUREN LAMB, rcsirling at New Haven, in thecounty of New Haven and State of Connecticut, have invented certain new and useful Improvements in Brakes, ofwhich thefollowing is a as by and exact description, such as Wlil holes 3.

full, clear, enable others skilled in the art to which it appcrtains to make anal use the same. this invention relates to brakes. One of the objects thereof is to provide braking means of highly eflicient and reliable action and simple and durable c Other objects will be in part obvious and in part pointed out hereinafter.

i The invention accortiingly consists in the features oi Construction, Combinations of elements, anti arrangement of parts, which will be exemplified in; the construction hereinai- 2o ter set forth, anrlthe scope of time lication of which will be'indicated in the claims. g

In the accompanying drawin 5, wherein is shown one of the various possi le embozli ments of this invention, F'gure 1 is a side elevation thereof. Fig. 2 is a reerview ofa p0rtion of the head. igi 3 is a similar view of another portion of the head, Fig. 4 1s a perspective view of Fig. 3; Fig. 6 of a composite type of Similar reference characters referto Si j;

lar parts throughout the several views of the drawingsf As tending to render clearer dominant aims of. this invention noted that the stresses brought the parts of bralge shcesiind heads in the course of harripithticel use are extremely severe, and yet the shoes must be in general so mountezl as to be removable trend the heads, asin caseoi renewal. If it be attcmpted to rovide e construction to'permit this remove by means of bolts or even keys, upon which. direct stresses are broughtto bear, it is found thatthese parts in them-- selves are not thoroughlydepeniable.

This invention deals with the an interfitting construction siich as will bringall the principal stresses directly upon the. parts of the shoe and ollowin'g g the parts shown Fig. 2. vFig. 5 IS a similar view of the partsshown IS a similar view ofe portion.

onstructi'on. l vizicii with registering head and of 'snchl 20 ofsnc Tings. ,Projectionsfll are,

simple form as to be readily assembled and of low cost of manufacture.

Referring now to the accompanying drawings, there is shown in Fig. 1 a brake-head 1, adapted to be mounted upon the brake-beam, means of flange 2, provided with bolt- Head 1 is formed in this emboiiimerit of the inventi 5, which are herein'rei'erred to as the main and auxiliary portion, respectively. Por tion 4 comprises a series of projections '6, extending forwardly toward the shoe and prokeyways 7 for a purpose neath these projectionsupon one side of the shoe is an abutment 8, the having reference by the term forward to a direction toward the wearing-face of the "shoe, of this abutment'being provided with e mortise or recess 9., the lateral wall of which is undercut, as shown at 10.' This recess, moreover, is of varyingdepth, havinga clecreasing depthtoward itsenr'ls The lateral well-of the rccess,"rnoreover, is-inclinecl to warn the longitndinal'airis of the heecl for a purposehereinafter described;

Portion 5 of the heed lie-provided with a number-oiprojectionsllgiadapted tofit between thepr jections fiabove'reierred to, the

m'eeting snri cos of these pens being prefer;

ably if-converging form a reerwarcl chrec-- ftiony-asifis best shown in Fig-l oi the drawrnoreover, provided'with keywaysv liedapted:

provisiono'f l head is of a composite or double form, com- I rising the shoe members-18 end 19. Me n er 18 is 'rovided with a tenon or projection conformation as'to fit the mortise on of two portions t and forward surface,

upon being fitted between the projections ,6, and over v the abutment 8 to register with the keyways one 'oi thcf it has beto bear uponhereinafer described. Extendingibe for:

17 above described and is provided upon its forward face with. a corresponding mortise 21. Shoe 19, which is substantially identical with shoe 18 immediately above described,

isherein shown as worn to a smooth surface 22 uponits forward face, but retains its tenon ,23, fitting the mortise 21. It will thus be seen that upon the shoe 19 becoming entirely worn away and the shoe 18 worn to any de sired degree the latter shoe may be removed from the head, a new shoe of the same general form fitted upon its tenon 20, and the corresponding tenon of the new shoe fitted within the mortise 17 of the head. In this manner the shoes may be entirelyconsumed and all waste of metal done away with. The fitting of the shoes one upon another is brought about by.dividing the same transversely into two parts, as the parts 24 and 25 of shoe 18 and 26 and 27 of shoe 19. .These parts are then assembled by. slipping the parts 24 and 25, respectively, over each end of the tenon 23 and thereupon inserting the tenon 20 in the mortise 17 "and assembling thehead as above described. The lines of divis'ion of the several shoes are preferably offset one from another, as shown at 28 and 29, in

order to avoid a continuous line of division,

to increase the strength of the shoe, and attain other desirable features. In the preferred embodiment of this invention, moreover, the shoes are curved in a transverse di rection, as shown at 30, thus insuring the en tire wearing away of each shoe prior to any abrasion of the tenon and doing away with the chance of dropping any fragments upon the road-bed.

The method of use of the above-described embodiment of this invention has already been to some extent set forth and it will be necessary merely to note that upon the outer or forward shoe being entirely worn As many cliangcs could be made in the above construction and manyv apparently widely different embodiments of this invention could bemade without departing from the scope thereof, it is in \'Il(l(l allmatter contained in the above description or shown in the accompanying drawings sh all be interpreted as illustrz uive and not in a limiting sense. It is also to be understood that the language used in following claims is intended to 'cover all of the generic and specific features of the invention herein It will tin be seen that described and all statements of the scope of guitfe, might be said to fall therebetween.

claim as new, and desire to secure by'Letters Patent, is'

head comprising a pair of laterally-separable portions each of which engages one of said portions of said head in assembled condition. 2. In brake construction, in combination, a brake-shoe having a rearwardly-projecting portion provided with undercut side walls converging toward each end of the shoe, a head comprising a pair of laterally-separable portions each of which is adapted to fit one of said side walls, and means adapted to hold the portions ofsaid head in assembled condition.

3. In brake construction, in combination, a brake-shoe having a rearwardly-projecting portion provided with undercut side walls converging toward each end of the shoe, a head comprising a pair of laterally-separable portions each of which is adapted to fit one of said side walls, the portions of said head being provided with laterally-extending in- ',=termeshing projectionsand means adapted to hold the portions of said head in assembled condition.

- 4. In brake construction, in combination,

portion provided with undercut side walls converging toward each end of the shoe, a head c'omprisin a pair of laterally-separable portions each 0 which is adapted to fit one of said side walls substantially throughout the entire length thereof, and means adapted to {hold the portions of said head in assembled condition.

a brake-shoe having a rearwardly-projecting portion provided with undercut side walls convergingtoward each end of the shoe. a head comprising a pair of laterally-separable portions each of which is adapted to fit one of said side walls adjacent each end thereof, and means adapted to hold the portions of said head in assembled condition.

6. In brake constructiomin combination, a brake-shoe havinga rearwardly-projecting portion provided with undercut side walls converging toward each end of the shoe, a head comprising a pair of laterally-separable portions each of which is adapted to fit one of said side walls adjacent each end thereof, said head being provided with intermeshing projections, and means adapted to hold the portions of said head in assembled condition.

7. In brake construction, in combination, a brake-shoe having arearwardly-projecting the invention, which,as a matter of lan aving described my invention, what I converging toward each end of the shoe, a

a brake-shoe having a rearwardly-projecting' 5. In brake construction, in combination,

1. In brake construction, in combination,

side walls, and means adapted to hold the ire stones portion provided with undercut side walls converging toward each; end. of the shoe, a head comprising a pair of laterally-separable portions each oi which is adapted'to fit one of said side walls adjacent each end thereof, said head being provided with intermeshin projections, and a key assin through said projections and adapted to ho d the portions of said head in assembled condition.

8. in brake construction, in combination, a brake-shoe having a rearwardly-projecting portion of decreasing thickness toward the ends of the shoe and provided with undercut side walls converging toward each end of the laterally-separable portions each of-which is shoe, a head comprising a 'pair'of laterally- ,separable portions each of which is adapted to fit one of said side walls, and means adapted to hold the portions of sa d head in assembled condition. v

9. In bralre-construction, in combination, a brake-shoe having a rearwardly projecting portion; of decreasing thickness toward the ends of the shoe and provided with undercut *side walls converging toward each end of the shoe, a head comprising a pair of laterally adapted to fit one of said side walls adj acent each end'thereof, and means adapted to hold the portions of said head in assembled condition 11. In. brake construction, incombinatron, a brake-shoe having a rearwardly-pro 'jecting portionprovided with undercut side walls converging toward the end of the shoe, a second shoe adapted to fit about said projecting portion and having upon its rear surface a similar projectingspprtion, a head comorising a" air of laterally-separable portions each of w ich isadapted to fit one ofthe side walls of the-projecting portion of said second shoe adjacent each end thereof, and means adapted to hold the portions of said head in assembled condition. v.

12. In brake construction, in combina tion, a brake-shoe having a rearWardly-projecting portion provided with undercut side walls converging toward each end of the shoe, a second brake-shoe fitted about said projecting portion and provided with a simiar projecting portion upon its rear surface, a

a pair of laterallybrake-hcad comprisin ll of which is adapted separable portions eac rvided with adapted to lntermesh one with another, and

walls,'a brake-head comprising a pair of of which is adapted with laterally-ex- 1 of decreasing thickness to-' ward the ends of the shoe and provided with" portion of said second shoe adjacent each end thereof, said ortions of said head being profaterally-exteriding projections a key passing through said projections and holding said portions of said head in assembled condition. Y

13. In brake construction, in combine tion, a brake-shoe having a rearwardly-projecting portion provided with undercut :iide

to fit one of the side walls of the projectingorally-separable portions each of which is adapted to fit one of said side walls adjacent each end thereof, the portions of said head being provided with laterally-extending in termeshing projections, and means adapted to hold the portions of said head in assembled condition.

14. In brake construction, in combina tion, a brake-shoe having a rearwardlyn ojecting portion provided with undercut side walls, a brake-head comprising a pair of latorally-separable portions each of whichv is adapted to lit one of said side walls adjacent eachend thereof, the portions of said head being provided with laterally-extending in termeshing projections, and a key passing through said intermeshing pro ections and adapted to hold the portions of said head in assembled condition.-

15. In brake construction, in combination, a brake-shoe having a rearwardly-extending projecting portion provided with undercut side walls, a brake-head comprising a main portion and a laterally-separable auxiliary portion, said portions of said head be ing ada ted respectively to fit said undercut side we ls adjacent each end thereof and said main portion being provided with a plurality of recesses, laterally-extending interineshing projections, respectively formed upon said main and said auxiliary portions, said projections upon said auxiliary portions being adapted to main portion, and means adapted to hold said fit within said-recesses upon said portions of said head in. assembled condition.

- 16. In brake construction, incombination, a brake-shoe having a rearwardly-extending projecting portion provided with undercut side walls, a brake-head comprising a main portion and a la'terally'separable auxiliary portion, said portions of said' head being adapted respectively to fit said undercut side walls adjacent each end thereof and said main portion being provided with a plurality of recesses, laterally-extending intermeshing projections formed upon said main portion and upon said auxiliary portion, an abutment formed upon said main portion, said projections upon said auxiliary portion bein adapt: ed to rest upon said abutment an within said recesses, and means adapted to hold the portions of said head in assembledcondition.

and upon said auxiliary portion, an abutment formed upon said main portion, said projec'- &

17. In brake construction, in combination, a brake-shoe having a rearwardly-extending projecting portion provided with undercut side Walls, a brake-head comprising a main portion and a laterally-separable auxiliary portion, said portions of said head being adapted respectively to fit said 'undercutside 'walls adjacent each end thereof and said main portion being provided'with a plurality of recesses, laterally-extending interme'shing pro ections formed upon said maln portion and upon said auxiliary portion, an abutment formed upon said" main portion, said projections upon said auxiliary portion being adaptedto restupon said abutment and within said recesses, an; abutting surface formed upon said auxiliary portion adapted to rest against said abutment, ,and means adapted to hold said portions in assembled condition. 7 f

18. In brake construction, in combination,

a brake-shoe having a rearw'ardly-extending projecting portion of decreasing thickness toward the ends of the shoe and'provided with undercut side walls, a brake-'head'coinprising a main port'ionand'a laterally-separable auxiliary portion,s aid portions of said head being adapted respectively to fit said undercut. si e walls adjacent each end thereof and said main portion being provided with a plurality of recesses laterall -extendin interrneshin projections formed upon sai main portion 'tion's upon said auxiliaryportionbein :adapted to rest upon said abutment an within said recesses, an abutting surface formed upon said auxiliary portion adapted to rest against said abutment, and means adapted to hold said *ortions in assembled condition.- 19. In bra e construction, in combination, a brake-shoe havin a rearWardly-projecting portion provided with undercut side walls, a second brake-shoe fitted about said projecting portion and provided upon its rear surfacewith a similar projectin portion, a brakehead comprising a pair 0 laterally-separable portions each of which'is adapted to fit the side walls of the projection upon said second shoe adjacent eachend thereof, and. means adapted to hold theportions of said head in assembled condition.

20. In brake construction, in combination, I a brake-shoe having a-rearwardly projecting portion provided with undercut side walls, a

second brake-shoe fitted about said projecting portion and provided upon its rear surface with a similar projectingportion, ab'rake.

head'comprising a pair of laterally-separable portions each of which is adapted tofit the side walls of the projection upon said second shoe adjacent each'end thereof, laterally-extending intermeshing projections respectively formed upon the portions of said head,

and a key passing through said intermeshing projections and adapted to hold the portions of said head in assembled condition.

21. In brake construction, in combination,

a brake-shoe having a rearwardlyrojecting portion provided with undercut si e Walls, a second brakeshoe fitted about said projecting portion and provided upon its rear surface .with a similar projecting portion, a brake-head comprising a pair of laterally-separable portions each of which is adapted to fit the side Walls of the-projection upon said second shoe adjacent each end thereof, laterally extending intermeshing projections formed upon the portions-of said head, an

abutmentformed upon oneportion of said head over which the projections upon the other portion thereof rest, said latter portion being provided with an abutting surface adapted to rest against said abutment, and a key assing through said 'rojections upon said said head in assembled conditionQ 22. In brake construction, in combination, a brake-shoe having a rearwardlv-extending projecting portion provided, with undercut side walls converging toward each end of the ead and adapted to ho d the portions of shoe, abrake-he'ad com rising a main portion and a laterally-separa le auxiliary portion,-.-

tion being provided with a pluralitytionsupon said auxiliary portion being adapt ed to rest upon-said abutment 'and .within' 0 are-.- cesses, laterally-extending intermeslimg'ipro-i 'j'ections' formed upon said main portion and, I .upon said auxiliaryjportion, an abutment formed upon said main portion;said-,projecsaid portions-of said head-being adapted re- .spectively to fit said undercut sidewalls ad-=' jacent ,each' end thereof and said main or,:

said recesses, andmeans 'adaptedto-hold'the jections formed upon said main portion and upon said auxiliary portion, an abutment formed upon said main portion, said-projections upon said auxiliary portion being ada' t'. ed to rest upon said abutment and wit 'n.

'said recesses, an abutting surface forin ed" upon said auxiliary portion adapted to rest against said abutment, and means adapted to hold said portions in assembled condition. '24. In brake construction, in combination,

3 a brake-shoe, a brake-head, one of said members having a projecting portion provided red ble.

with undercut side walls converging toward each end thereof land the other'oi saidzmembers comprisin a pairof laterally-separable portions each 0 which is adapted to fit one of saidside walls adjacent eachend thereof, and 7 portions of said means adapted to hold the last-mentioned memberin assembled condition, i

ing thickness" towardits ends and provided with undercut side walls and the other of said members being formed in two laterally-sepa ortions each of which is adapted tofit one 0 said side walls adjacent each end there- ,ofQand means adapted to hold.- the portions of said last-mentioned member in assembled condition.

26. In brake construction, in combination, 20 a brake-shoe, a. second brake-shoe having a dovetailed connection therewith, and a brake-head having adovetailed connection with said second brake-shoe, said members being formed to permit the lateral separation 2 5 of, the parts'forming the female member of one of said dovetailed connections.

In testimony whereof. I aflix my signature in the presence of two witnesses. i

VAN BUREN' Witnesses R.S.BLAIR,- G. Pnnvm. 

